Any issue with switching between BMW Castrol and Mobil 1
OK I plan on changing my oil myself in between the changes provided by the dealer/maintenance plan. Obviously the dealer is going to use the Castrol BMW. From your article you suggest the Mobil 1 over the Castrol. If I use the Mobil 1 for one change and the dealer uses the Castrol for the next etc etc etc are there any issues with alternating oils ?